Hot-air furnace.



PATENTED JUNE 11, 1907.

J. P. KoLLA. HOT AIR FURNACE.

APPLICATION FILED NOV. 19,

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JOHN P. KOLLA, OF HOLLAND, MICHIGAN, ASSIGNOR TO THE HOLLAND FURNACE COMPANY, OF HOLLAND, MICHIGAN.

HOT-AIR FURNACE.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed November 19, 1906. Serial No. 343,979.

To all 1072,0717, it 777/CLZ/ concern.-

Be it known that I, JOHN P. KOLLA, a citizen of the United States, residing at Holland, in the county of Ottawa and State of Michigan, have invented certain new and. useful Improvements in Hot-Air Furnaces; and I do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a new and useful improvement in hot-air furnaces, and the invention consists in a furnace having a radiator at the top thereof and a draft check or damper set therein, all substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical cross section of the radiator on the line of the check damper therein, and Fig. 2 is a perspective view of the lower half or section of the radiator and a portion of the exhaust flue and damper. Fig. 3 is a horizontal plan of a portion of. the radiator and exhaust flue and damper and portion of controlling mechanism therefor. Fig. 4 is a per spective view of the flue connection or check flue pipe in a reverse position to that shown in the other figures.

As thus shown, the invention comprises a radiator or upper member A of a hot air furnace, having an inclosing air drum B and flues C therefrom as usual. The said radiator is mounted upon the body D of the furnace in any approved way, and said body or lower portion itself may be of any approved pattern, the present invention consisting more essentially in the radiator, as such, and furnished with a check damper at or near the exit therefrom and within the walls of the radiator itself.

Now, examining the radiator in its details, we find the same circular in outline and provided with a central space having a side wall 4 which rests down on body D of the furnace and which opening is surmounted by dome 5 closing the top thereof. From this inner space or opening the draft is through side outlet 6 into the annular radiator channel having inner wall 7 and outer wall 8 and open as a channel directly or indirectly to exhaust flue F according as check or damper G is open or closed. Said damper is supported on actuating rod H, which has a square shank 9 on which the damper is operatively engaged and kept from turning by correspondingly shaped loop h on the back thereof through which said shank projects. It will be noticed that said damper is located immediately at one side of the direct exit from the radiator into flue F, at the side of which flue the rod H is rotatably supported in suitable bearings, and the right angled arm 10 thereof has an open slot in its end which is engaged by projection 12 on controlling bar 13 entered vertically through flue extension 14 outside drum B. This construction and arrangement of said parts gives a quarter turn to damper G to open and close the same, which is all it requires. closed, as in Fig. 2, draft is compelled to enter through passage 6 behind the damper and travel thence around the complete circuit of the radiator to escape on the other side thereof through the outlet flue, and thus a large percentage of the heat which would otherwise escape out the chimney is radiated during its long travel through to the hot air channels, working a material economy in fuel.

It will be seen that inlet passage 6 to the radiator channel and outlet or exhaust passage or flue F are in juxta-position or in such near relation that there is room simply to mount damper G between them. Thus compelling the products of combustion to traverse the entire circuit of the radiator channel when the damper is closed.

The several parts including damper G, rod H having slotted arm 10, and operating bar or rod 13 are so constructed and arranged as to be operatively assembled as seen in Fig. 2 by first inserting the damper through the exhaust passage and then entering rod H through the bearings and engaging its angular shank 9 in correspondingly shaped loop 7L on the back of the damper. A slip connection between rod projection 12 is then made by slipping and securing flue extension 14 upon flue F and bringing the parts together. It will also be noticed that this brings rod 13 outside the hot air drum, so that there can no gases escape into the air spaces and enter the apartments on this account. Otherwise the damper and its operating parts are wholly within the draft passage of the furnace.

Flue extension 14 has a check draft opening at one side adapted to be closed by check hen the damper is l lid 15 hinged to either one of two lugs 16 thereon, and said extension may be rotatable in respect to flue F to reverse the position of the check draft opening, that is, to bring it to either one side or the other so that the same may be in plain view from the front of the furnace to guide the operator in firing same.

Two lugs 16 are required because lid 15 must necessarily be changed to hinge from the top and close by gravity whenever a reversal from one side to the other occurs. Lugs 17 on extension 14 provide bolt connections with like lu s 18 on flue F. An acorn weight and regulating chain 19 for radiator damper G is carried forward to the front of the furnace so that complete control at that point may be had in firing.

What I claim is:

1. furnace havingan exhaust flue joint provided with a separate check damper opening having opposite lu s at its edge, in combination with a reverslble check lid for said opening, whereby the check damper opening may be reversed as to sides. I

2. A furnace having an exhaust flue and a damper therefor, an extension joint for said flue detachably and rotatably connected thereto, and a check draft opening and lid for said opening on said extension joint, and means mounted within and upon said exhaust flue and said extension joint, respectively, adapted to operate said damper, said joint constructed to operate said means in either of its positions.

In testimony whereof I sign this specification in the presence of two Witnesses.

JOHN P. KOLLA. Witnesses AREND VISSCHER, r KATE PRAKKEN. 

